Hey i have customized stock.picking to force back date entry in stock move and stock move line while product receipt. But when i successfully post an entry in back date it do get posted but shows no effect on stock.valuation.layer. Is there something i am missing in the workflow? Kindly help

This is how i am overriding action_done()

def action_done(self):
    for pick in self:
        for ops in pick.move_line_ids.filtered(lambda x: not x.move_id):
            new_move = self.env['stock.move'].create({
                'date': pick.force_date,
            })
    self.write({'date_done': self.force_date})
    res = super(Picking,self).action_done()
    return res
Thanks in advance